Anomalous Origin of Left Vertebral Artery.

Background: To document the unusual origin of left vertebral artery from the arch of aorta and to discuss the embryological basis and clinico-anatomical correlation of such variation. Materials and Methods: This finding was seen after thorough and meticulous dissection of the thorax in a 58 year old male cadaver in the department of anatomy, R.G.Kar Medical College. Results: There was anomalous origin of the left vertebral artery from the arch of aorta whereas the right vertebral artery took its normal origin from right subclavian artery. Conclusion: This anatomical variation can be explained in the light of embryological development .In addition knowledge of such variation is important for carrying out surgical procedures.

Two Cases of Aberrant Right Subclavian Artery and Right Vertebral Artery that Originated from the Right Common Carotid Artery

We present here two patients that had an aberrant right subclavian artery and an anomalous origin of the right vertebral artery from the right common carotid artery. We review the previous literature and discuss herein the embryologic mechanism and clinical implications of this variation.